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Diagnostic Method

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE CHART

Malfunction Criteria Threshold Value
Number of times that the difference between the Max. fuel level every 60 s and Min. fuel level every 60 s is 2 (0.53 US gal, 0.44 Imp gal) or more (with enable condition established) ≥ 16 time(s)
Maximum - Minimum tank pressure (with enable condition completed) < 0 kPa (0.375 mmHg, 0 inHg)
Maximum - Minimum fuel temperature (with enable condition completed) ≥ 7 °C (12.6°F)

If the difference between the Max. fuel level every 60 s and Min. fuel level every 60 s is less than 2 (0.53 US gal, 0.44 Imp gal), extend 60 s and make judgment with the Max. and Min. values for the fuel level in 60 s x 2. If there is no difference after the extension of 60 s, extend the time (60 s x 3, 60 s x 4, 60 s x 5) and continue the judgment. If the difference between the Max. fuel level every 60 s and Min. fuel level every 60 s is 2 (0.53 US gal, 0.44 Imp gal) or more, the diagnosis counter counts up.

Time Needed for Diagnosis:  60 s x 16 time(s) or more

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.

Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.

JUDGMENT VALUE CHART

Malfunction Criteria Threshold Value
Maximum - Minimum tank pressure ≥ 0 kPa (0.375 mmHg, 0 inHg)

Time Needed for Diagnosis:  Less than 1 second